PHP Core Warning – yii\base\ErrorException

$_GET = [
    'random' => '1790904616',
];

$_COOKIE = [
    '_csrf' => '5cbf65434f2104f34d5d2a1902c8b7b2de6c98aa3946f2776a45b0331021a954a:2:{i:0;s:5:"_csrf";i:1;s:32:"gh7h1OQEFeq-7-q5T1-khD6vSnVmKLI9";}',
    'topics-session' => '1790909969.51.16901.914177|d197bbbd1d400bd72372bc93068ad169',
    'PHPSESSID' => '4beerg71sb88jaff60v37jo1k0',
];

$_SESSION = [
    '__flash' => [],
];